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Questions and Answers
What is the main reason for the increase in cardiac output during exercise?
What is the main reason for the increase in cardiac output during exercise?
- Decrease in venous return
- Decrease in end diastolic volume
- Decrease in stroke volume due to sympathetic stimulation
- Increase in stroke volume due to sympathetic stimulation (correct)
What contributes to the cardiac acceleration during exercise?
What contributes to the cardiac acceleration during exercise?
- Decrease in venous return
- Decrease in body temperature
- Corticohypothalamic discharge and positive chronotropic effect of sympathetic discharge (correct)
- Decrease in respiration
How does muscular exercise affect venous return?
How does muscular exercise affect venous return?
- The relaxation of skeletal muscles and decreased activity of respiratory muscles
- Decreased sympathetic activity on the venous system
- The contraction of skeletal muscles and increased activity of respiratory muscles (correct)
- Decreased contraction of skeletal muscles
What contributes to the increased stroke volume during severe exercise?
What contributes to the increased stroke volume during severe exercise?
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What effect does sympathetic activity have on the venous system during exercise?
What effect does sympathetic activity have on the venous system during exercise?
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What contributes to the increased stroke volume during severe exercise?
What contributes to the increased stroke volume during severe exercise?
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What contributes to the cardiac acceleration during exercise?
What contributes to the cardiac acceleration during exercise?
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What contributes to the increase in venous return during muscular exercise?
What contributes to the increase in venous return during muscular exercise?
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What effect does the increase in body temperature have on cardiac acceleration during exercise?
What effect does the increase in body temperature have on cardiac acceleration during exercise?
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What effect does increased sympathetic activity have on the venous system during exercise?
What effect does increased sympathetic activity have on the venous system during exercise?
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